The Tankan Survey is a quarterly survey conducted by the Bank of Japan (BoJ) to assess the business conditions and sentiment of Japanese companies. The survey is considered to be one of the most important indicators of the Japanese economy and is closely watched by policymakers, investors, and analysts.The Tankan survey is based on responses from thousands of Japanese companies of various sizes and across different industries. The survey covers a wide range of topics including business conditions, investment, sales, employment, and prices. The survey results are then used to create the Tankan index, which is a composite index that summarizes the overall sentiment of Japanese companies.The Tankan index is divided into four main categories: large manufacturers, large non-manufacturers, small manufacturers, and small non-manufacturers. Each category is further divided into three subcategories: current conditions, expectations for the next quarter, and expectations for the next fiscal year.The Tankan survey is considered to be a leading indicator of economic activity, as it provides insight into the current and future business conditions of Japanese companies. The survey results are released to the public on the last working day of the first month of each quarter, and the Bank of Japan also releases reports on the survey. The results of the survey are widely reported by media and are used by investors and analysts to assess the health of the Japanese economy and make investment decisions.